Acid-resisting receptacle



HERMANN EVERKEN, F ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP .AKTIEN-GESELLSCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

AGID-RESISTING REGEPTAGLE.

No Drawing.

To all whom it may concern:

Be it known that I, HERMANN EVERKEN, residing at Essen, Germany, acitizen of the German Republic, have invented a certain new and usefulImprovement in Acid-Resisting Receptacles, (for which I have filed anapplication in Germany, June 17, 1918,) of which the following is aspecification.

This invention relates to acid resisting receptacles such as boilers,pipes and the like having an inner wall composed of acid resisting ironand an iron outer wall separated from the inner wall by an intermediatespace and the invention consists in casting the intermediate space fullof lead.

A constructional example of the receptacle forming the subject matter ofthe invention will be described below. The receptacle, which is intendedin particular for hold ing hot concentrated nitric or sulfuric acid,

has an inner wall composed of acid resisting cast silicon iron and anouter wall separated from the inner wall by an intermediate space, whichouter wall is. composed of cast iron, which should be as acid resistingas possible. The intermediate space is Specification of Letters Patent.

Patented July 5, 1921.

Application filed September 4, 1920. Serial'No. 408,374.

cast full of lead, which forms a perfectly tight connection between thesilicon'iron of the inner wall and the cast iron of the outer Wall, sothat cracks, which may easily occur in the inner wall owing to theaction of the temperature of the acid, which rises to from 100 to 300degrees, are rendered harmless. The cast iron outer wall prevents at thesame time any sagging of the leaden jacket under the action of thepressure existing in the interior of the receptacle, which can transmititself through the cracks to the leaden jacket.

Claim.

An acid resisting receptacle having an inner wall of acid resistinglron, an outer wall separated from the inner, and a filling of cast leadbetween said walls.

The foregoing specification signed at Essen, Germany, this 11th day ofJune, 1920.

HERMANN EVERKEN.

